I thought the taco nest's were sloped at the entry point? Nak, wouldn't you just build a tube platform to put your current tent on there? I've seen some cool one's that keep the top of the RTT at the same height as the top of the cab.

That's a thought, but if I'm taking a RTT I'd rather just have the truck under it with a fridge & drawers. I don't need another RTT option, but OTOH the 'nest is a whole different experience.